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Patent Searching and Data


Title:
FOAMED PRESSURE SENSITIVE TAPES
Document Type and Number:
WIPO Patent Application WO1997047681
Kind Code:
A3
Abstract:
The present invention relates to a pressure sensitive adhesive foam with a percentage of theoretical density less than 90, wherein the foam has a peel adhesion of greater than about 1 N/cm and a compression set under constant deflection of less than about 60 %. The present invention further includes a pressure sensitive adhesive foam comprising a thermoplastic block copolymer; a tackifying resin; an isocyanate terminated monomer or oligomer; a polymer comprising a backbone selected from the group consisting of polybutadiene, polyester and polyether, wherein the polymer contains at least 2 active hydrogens capable of reacting with the isocyanate terminated monomer; and expandable particulate materials. The present invention further includes a pressure sensitive adhesive foam comprising a thermoplastic olefin polymer or copolymer, having a density less than 0,91 g/cm<3> and a torsion modulus less than 18 MPa, and a tackifying resin; and, optionally, plasticizing oil and expandable particulate materials, or glass microspheres. The invention finally further comprises a method of forming the above film. 00000

Inventors:
LADANG MICHEL (BE)
PETIT DOMINIQUE (BE)
Application Number:
PCT/US1996/010107
Publication Date:
August 06, 1998
Filing Date:
June 10, 1996
Export Citation:
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Assignee:
NORTON PERFORMANCE PLASTICS CO (US)
LADANG MICHEL (BE)
PETIT DOMINIQUE (BE)
International Classes:
C08F279/02; C08F291/02; C08J9/32; C08L53/02; C09J5/08; C09J123/04; C09J123/10; C09J123/20; C09J151/00; C09J153/00; C09J175/04; C08L23/02; C08L91/00; (IPC1-7): C08L/
Domestic Patent References:
WO1995025774A11995-09-28
Foreign References:
US4855170A1989-08-08
EP0717091A21996-06-19
FR2237945A11975-02-14
US5024880A1991-06-18
EP0084220A11983-07-27
US5342858A1994-08-30
US4223067A1980-09-16
GB2250513A1992-06-10
JPS63202680A1988-08-22
Other References:
DATABASE WPI Section Ch Week 9519, Derwent World Patents Index; Class A81, AN 95-145074, XP002009441
PATENT ABSTRACTS OF JAPAN vol. 006, no. 235 (C - 136) 20 November 1982 (1982-11-20)
DATABASE WPI Section Ch Week 8441, Derwent World Patents Index; Class A81, AN 84-254572, XP002009442
CHEMICAL ABSTRACTS, vol. 120, no. 26, 27 June 1994, Columbus, Ohio, US; abstract no. 325387, "peelable pressure sensitive tapes" XP002009440
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